[GH-6976] Expose params passed into a method

lib/rubyzen/collections/methods_collection.rb

@@ -6,6 +6,14 @@ module Collections
     class MethodsCollection < BaseCollection
       include Rubyzen::Providers::CollectionFilterProvider
 
+      def parameters
+        ParametersCollection.new(
+          flat_map do |method|
+            method.parameters
+          end
+        )
+      end
+
       def if_statements
         DeclarationCollection.new(
           flat_map do |method|

lib/rubyzen/collections/parameters_collection.rb

@@ -0,0 +1,7 @@
+module Rubyzen
+  module Collections
+    class ParametersCollection < BaseCollection
+      include Rubyzen::Providers::CollectionFilterProvider
+    end
+  end
+end

lib/rubyzen/declarations/method_declaration.rb

@@ -25,6 +25,17 @@ def name
         node.method_name.to_s
       end
 
+      def parameters
+        Collections::ParametersCollection.new(
+          node.arguments.map do |arg|
+            ParameterDeclaration.new(arg, self)
+          end
+        )
+      end
+
+      def parameters?
+        node.arguments.any?
+      end
     end
   end
 end

lib/rubyzen/declarations/parameter_declaration.rb

@@ -0,0 +1,24 @@
+module Rubyzen
+  module Declarations
+    class ParameterDeclaration
+      include Rubyzen::Providers::FilePathProvider
+      include Rubyzen::Providers::LineNumberProvider
+      include Rubyzen::Providers::ClassNameProvider
+
+      attr_reader :node, :parent
+
+      def initialize(node, parent)
+        @node = node
+        @parent = parent
+      end
+
+      def name
+        node.name
+      end
+
+      def default_value
+        node.children[1]&.value
+      end
+    end
+  end
+end

sample_project/spec/models/no_arguments_named_biz_spec.rb

@@ -0,0 +1,11 @@
+require_relative '../spec_helper'
+
+RSpec.describe 'No complex logic in models' do
+  it 'has no methods with arguments named biz' do
+    expect(models.all_methods.parameters.with_name(:biz).empty?).to be true
+  end
+
+  it 'has no methods with arguments named biz that have a default value' do
+    expect(models.all_methods.parameters.with_name(:biz).first.default_value.empty?).to be true
+  end
+end

sample_project/src/models/user.rb

@@ -1,17 +1,21 @@
 class User < ActiveRecord::BaseAurora
   attr_reader :name, :email
-  
+
   private
-  
+
   attr_writer :password
-  
+
   public
-  
+
   def active?
     true
   end
 
   def foo
     true
   end
+
+  def bar(biz: "Bizzzz")
+    "#{biz}"
+  end
 end